D2 Series · Diesel + DEF

Diesel and DEF.
One system, every stage.

Modern emissions-controlled generators need reliable DEF alongside their diesel. The Earthsafe D2 Series handles both fluids together — from a duplex transfer pump to a 2,500-gallon storage tank — with the DEF tank sized at 10% of diesel throughout.

Compare Models → Download Datasheets
M2 product render
DIESEL + DEF · EMISSIONS-READY

Shared technology

The same engineering in every module.

01

Two fluids, one system

A diesel path and a DEF path in one enclosure, controlled together. The DEF tank is sized at 10% of diesel so emissions-controlled gensets never run short.

02

Redundant, critical-grade

Duplex pump sets and mission-critical versions with dual controls, sensors, and valves keep fuel and DEF flowing where downtime is not an option.

03

Level, leak & overfill protection

4- or 5-point level and leak sensing, 85-90-95% high-level detection, actuated overfill valves, and 3-gallon spill containment ship standard.

04

C1 / C8 controls & BMS

UL 508A PLC controls with color HMI. Output relays for High, Low, and Leak, plus Modbus — and optional BACnet — to building and generator systems.

Built for emissions-ready fuel

Clean-running generators need both fluids, reliably.

01

Emissions compliance for modern gensets

New generators control emissions with DEF. The D2 Series keeps DEF supplied alongside diesel so engines meet their limits.

02

Safe storage & fill inside buildings

Integral secondary containment and architectural stainless fill stations store and fill both fluids safely, indoors or on the wall.

03

Reliable refill systems

Pre-assembled, tested inlet valves, transfer pumps, and sensors are monitored and controlled by the C1 or C8 panel.

04

Integrated with building systems

Advanced controllers relay tank and pump status to BAS, generator controls, switchgear, security, and fire-alarm systems.

Earthsafe containerized polishing system

Equipment & options

Configured for your install.

Every D2 module ships with a complete valve, gauge, sensor, and containment package for both fluids, and adapts to the tank count, code, and control requirements of the site.

Download Spec Sheet Request a Quote
Standard equipment
Ball & check valves, inlet strainers
Pressure / vacuum gauges
3-gallon spill containment
4- or 5-point level + leak sensors
Direct-read level gauge
C1 / C8 controller with color HMI
Options
Multi-tank selection
Actuated overfill valve
Level & temperature transmitters
Duplex transfer pumps / remote fill station
Modbus / BACnet connectivity
Floor-mount stand 24″ / recess wall collar

Talk to an engineer

Running an emissions-controlled generator?

Send us your generator size, run-time, and DEF consumption. We'll size the right D2 diesel + DEF module and turn around datasheets, dimensional drawings, and BMS integration specs.

Request a Quote → Talk to Tech Support